We are creating a web service that will take a complex object as a parameter. Will this be an issue if SAP and PeopleSoft need to consume the service and create the object to pass in as a parameter?
Thanks!
If the WSDL is well-established, and both PeopleSoft and SAP can create SOAP XML requests and send them to a URL, then both should be able to work with your service.
The key will be marshalling and unmarshalling your complex object to and from XML. Neither PeopleSoft nor SAP will be able to deal with your object. They'll have to get everything they need from XML, no more and no less.
Start by establishing the contract for request and response for your service, and the rest will follow: contract first web service.